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Note 4 - Lines of Credit (Detail) - Summary of Company Credit and Other Debt Facilities: (in thousands) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Loan balance $ 1,246 $ 3,641 [1]
Japan Term Loan 204 227
Japan Term Loan 0.10% 0.10%
Unused availability 5,964 3,607
United States [Member]
   
Loan balance 673 2,621
Average interest rate 4.50% 4.75%
Unused availability 4,586 2,671
Australia [Member]
   
Loan balance 75 402
Average interest rate 9.66% 10.38%
Unused availability 1,144 818
Canada [Member]
   
Loan balance 498 618
Average interest rate 4.00% 4.00%
Unused availability $ 234 $ 118
[1] The Balance Sheet at December 31, 2011, is excerpted from the consolidated audited financial statements as of that date but does not include certain information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.